Know or listen to those who know.

To be a good loser is to learn how to win.

The wise does at once what the fool does at last.

By failing to prepare, you are preparing to fail.

Be thine own palace, or the world's thy jail.

After a storm comes a calm.

Things do not happen. Things are made to happen.

To know oneself, one should assert oneself.

If you're going through hell, keep going.